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Subject: the demodulation method of type B smart card

Date: 04/01/02 at 1:32 AM
Posted by: shi
E-mail: shijm@cidc.com.cn
Message Posted:

hi,
I need to decide which kind of circuit to use to demodulate the type B signal on smart card IC.
Since the received voltage value have very little difference on the '0' and '1' signal. It's 10% index modulation. Who can help me to decide how to demodulate the signal. very thankful !

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